+ Opeartion
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- Sel_DQ input selection for 2 races
- Q_odds input odds for horse for 2 races

- 


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- DQ.prg

- DQ.dbf --- Structure ---- Final Result file

  F1    OD_F1
  S1    OD_S1
  F2    OD_F2
  S2    OD_S2
  
  Q1
  Q2

  DQ = Q1 X Q2

  Sel_dq
  F1 S1 F2 S2

  
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- Operation
- Input SEL_DQ.dbf with Q selection for 2 races
- Input odds for both races in Q_odds.dbf

  

- DQ_Q1.dbf    F1 F2 ( 1st Q combination ) 
  DQ_Q2.dbf

- Q_odds.dbf   --- Odds for 2 Races for calculating Q odds

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